Steam-boiler



O. F. SIBALD. CONSTRUCTION OF STEAM BOILERS.

No. 10,353. Patented Dec. 20, 1853.

uunuununch CHARLES. E. SIBBALD, 6F PHILADELPHIA, PElSINSYLVANIA.

STEAM-BOILER; 1

Specification of Letters Patent No. 10,353, dated December l); i

Too whom it may concern Be it known that I, CHARLES FRAsER SIB} description of the principle or the character whichdistinguishes it from all ether things before known and of the usual manner of making and using the same, reference being had to the inclosed drawings, of which Figure 1, is a sectional view from front to rear of the boiler. Fig. 2, is a cross section of the same showing the flue and Water spaces of one half of the boiler. Fig. 3, is a plan of the floor of the flue, and water spaces embracing the damper. Fig. 4, represents one of the plates forming one side of the flue spaces. Fig. 5, represents this in connection with the other plate completing the flue. Fig. 6, is a vertical section through the connected plates showing the manner of lapping them.

My improvement consists in a certain arrangement of flue and water spaces of a certain form, in connection with the arrangement of'the fire chamber, so as toobtain a great surface for the rapid development of steam, and a great saving of fuel, by this ar-" rangement I also attain great facility in reaching the boiler flues to remove sediment and incrustation.

I have also invented a mode of putting together the plates composing a boiler of such form and arrangement, so as to make a very tight and strong boiler. And I have also invented in connection with the flue and water spaces an arrangement for circulation. The boiler I intend to call the condensed plate boiler, and it is obvious that the arrangement of the flue and water spaces is applicable to the purposes of a surface condenser.

The advantages of economizing'room, and weight and other advantages incident thereto (which latter will be readily comprehended and appreciated by all who are familiar with the subject) I claim to belong to my arrangement which I will nowproceed to describe.

In Fig. 1 (Z?) is the shell'of the boiler, (d) the fire chamber (g) the grate bars (9) the furnace door (7)) the circulating space in the boiler (e), the walls of the flue and water spaces the flue space being represented by (e) and the water spaces by (6 0 is rTED STATES P TE OFFICE the steam chamber (d) a pipe leading to the extra steam chamber ((Z). "f is thesmoke stack, and the course of the draft reverberatr 'ing" in the flues is shown F 1 4 i i i In Figs. 1 and 2 are the fire' bridges in I by the arrows each flue for deflecting the draftupwardin the flues, (d shows the floorof thefurnace flues, which is entire across the furnace, with the'exception of the spaces forthe draft front and rear, for each flue, which are represented at ((Z ).L(d in Fig. 3. The

vanes (a (a of the registeror damper are operated in the usual way for regulatingthe draftf'The circulating flue space (7)) surrounds the plateflues, so as to aiford ample circulation, to meet the rapid and extensive action from the great fire surface in. this boiler. It will be seen that the heat is. applied in a reverberatory manner to the flues, there being a short fire bridge or deflecting plate to give an upward direction to the draft. The mode of putting together the plates forming the flues and water spaces in my condensed plate boiler is as follows. I take a plate. (p), Fig. 4, and cut'it as shown in the drawing, the portion .at. the lower corners (39', p,) I cut out, and'I cut into or divide the u er corners in the line 2 this PP Y 2 with the. exception that it is somewhatsmaller in orderthat its laps may be embraced within the overlaps of plate (20).

The lap (p is bent backward at'right angles to the plate, and side laps (19 are bent forward also at right angles to the plate. Lap (129 .isbent'forward and down-- ward at right angles to the plate and the projecting lip or ear (1)") is bent over and close down uponlap (p and thus one half of the flue. structure is prepared before puttingftogether. The plate X formingthe other half is prepared in the sameway, and then connected withlplate (p) as shown in Figs. 5 and 6 and. the twoare-ri-veted together on the tops and ends, and the laps (p of. each series being. riveted together, forms the bottom of the water spaces. (The series ofplate flues thus put together arel fixed to the floor plate (6Z and other attachments to the boiler shell, and other parts are made after well known modes.

In order to adapt this arrangement of flues to a locomotive the shell of the boiler might be oval instead of round. It Will be seen that from the arrangement of the circu lating space (6) entirely'around, anddropping below the Water spaces, that it'Wlll be the deposit for sediment, from which it-can be readily removed. The flues are made three feet deep or high, two and three quarters inches at their Widest, and one and a half inches at their narrowest parts, or these dimensions may be varied; the fiues form'a continuous or attached range, and being closed at their tops and bottoms, and at the ends of the fire flues as set forth, there is a complete Water chamber formed affording ample clrculation, and also a somewhat confined heating chamber with a large surface CHAS. F. SIBBALD. 

